366 BROOKLYN BOTANIC GARDEN MEMOIRS 
Tranzschel (155) suggests the possibility of two other races, one on 
Carex pallescens and a second on Carex vaginata. 
Puccinia Centaureae-Caricis Tranz. Tranzschel (155) suggests 
that the various Centaurea-Carex rusts may best be grouped under the 
above name. ‘The following rusts are thus included: 
1. Puccinia Caricis-montanae Ed. Fischer. Bandi (15) claims to have 
found evidence for the occurrence of specialization in this 
heteroecious rust which forms its uredospores and teleuto- 
spores on Carex montana and its aecidiospores on species of 
Centaurea. He mentions two specialized races based on 
the choice of aecidial host: 
a. On Centaurea scabiosa. 
b. On Centaurea montana. 
. Puccinia tenuistipes Rostrup; aecidial stage on Centaurea Jacea; 
uredo and teleuto stages on Carex muricata. 
3. Puccinia arenarticola Plowr.; aecidial stage on Centaurea nigra; 
uredo and teleuto stages on Carex arenaria. 
4. Puccinia Jaceae-leporinae Tranz.; aecidial stage on Centaurea 
Jacea; uredo and teleuto stages on Carex leporina. 
5. Puccinia Jacea-capillaris Tranz.; aecidial stage on Centaurea Jacea; 
uredo and teleuto stages on Carex capillaris. 
6. An unnamed rust with aecidial stage on Centaurea orientalis; uredo 
and teleuto stages on Carex gynobasis. 
Puccinia extensicola Plowr. This name is applied to a group of 
rusts which have their aecidial stage on Compositae and their uredo 
and teleuto stages on species of Carex. Arthur (2, 3, 5, 6, 8, 9, 10, 
11, 13) has listed a number of forms under distinct names, but later 
suggests that they are merely specialized races of Puccinia extensicola. 
The following rusts are regarded as belonging here: 
1. Puccinia Caricis-Erigerontis Arth.; aecidial stage on Erigeron 
annuus, E. canadensis and E. philadelphicus; uredo and teleuto 
stages on Carex festucacea. 
2. Puccinia Caricis-Asteris Arth.; aecidial stage’on Aster acuminatus, 
A. adscendens, A. cordifolius, A. paniculatus and Solidago 
gramintfolia; uredo and teleuto stages on Carex festiva, C. foenea 
C. retrorsa, C. rosea, C. scoparia and C. trisperma. 
3. Puccinia Caricis-Solidaginis Arth.; aecidial stage on Solidago caesia, 
S. canadensis, S. graminifolia, S. rigida, S. serotina and S. 
ulmifolia; uredo and teleuto stages on Carex Jamesiit, C. 
scoparia, C. sparganoides and C. stipata. 
It is suggested that a distinct race may occur on Carex scoparia 
and Solidago graminifolia. 
Puccinia silvatica Schroet. This rust is reported as having its 
NO 
